George p



l V(No Model.) GLP. SHERMAN 8a BONDELI.

Cornler "Iron for` Woven Wire Mattress Framefs.

N.PE1 sus. PHDTD-LITHOGRAPHER, WASHINGTON, D C.

y UNrlrnnx Summits Batteur" @trices GEORGE P. SHERMAN lANDALBERTBONDELL` OF llULWAUKEE, WISCONSIN;

` SAID BONDELIASSIGNOR TO SAID SHERMAN.

SPECIFICATION Tformngpart oflL'etters Patent No. 239,117, dated- March272, 1881.

Application tiled September 9, 1880.

make and use the same, reference being had to the `accompanyingdrawings,and to letters or figures of reference marked thereon, which I form apart of this specification.

Our invention relates to improvements in I corner-irons forwoven-mattress frames.

Heretofore the end and side rails forming the frames have been securedto the cornerzo irons by bolts, two or more heavy bolts being required iat each of the four corners of the frame.

rEhe object of our invention is to dispense with the use ofthe bolts,which end we accomz 5 plish by the peculiar construction of thecorner-irons, by which they are adapted to be secured to therespectiverails in slots or grooves, and the use of bolts becomesunnecessary. Two of the corner-irons at one of the ends of the 3cmattress are adjustable, so that the tension of the mattress may beincreased or diminished. The other corner-irons are non-adjustable, andare rigidly xed to the frame.

Our invention is further explained by referencetothe accompanyingdrawings,in which- Figure 1 represents an end view. Fig. 2 is a sideview of an adjustable corner-iron. Fig. 3 is a front view of theadjustable corner-iron. Fig. 4. is a rear view of the adjustablecorneriron. Fig. 5 is a perspective view of the. nonadjustablecorner-iron constructed in a single piece.

Two nonadjustable corner-irons are used at one end of the mattress, andtwo adjustable 4 5 corner-irons are used at the other end.

1n the drawings like parts are represented by the same reference-lettersthroughout the several views.

A represents one of the side rails, both of @so which are provided attheir respective ends` (No model.)

with slots B B, for the reception ofthe vertical'lugs C C oftherespective corner-irons. The lower endsof lugs C are respectively pro-\'ided with langes l) l), by which'they `are prevented from being drawnupward through the'slotsBQ- F F are the endrails. The corner-irons aresecured to the sidei'rails, A, by inserting the lug C in the slotforrecess B, when they are respectively drawn firmly toward the centers ofthe rails, and thus securely 6o retained by the tension of the mattress.When the corner-irons are thus attached to the respective ends of theside rails the end rails are placed at right angles thereto in the rel'cesses G G beneath the V-sha'ped lug E. Both 65 ofthe end rails areprovided with angularl V- shaped grooves, conforming in shape vto thelugs E, in which said lugs rest.. Thus, as the tendency of the wiremattress is to draw the end rails toward each other, they are drawn 7othereby back more firmly into the recesses G.

It is obvious that by this arrangement a rigid intleXible corner-jointis formed wit-hout the aid of bolts, and that the end rails are securelyretained above, and in their proper relative position to, the siderails.

In the adjustable corner-irons the lugs C C are made detachable, and arerespectively provided with flanges H H.

J is the central part or body of the corner- 8o iron, the lower surfaceof which is made con cave to conform to the convex surface of the upperedge of theside rails. The body J is provided with a dovetailed-shapedslot or recess, I, for the reception of the upper end of 8 5 the lug G,conforming in shape to the flanges H H, which are loosely fittedtherein, and are adapted to be moved and adjusted therein by means ofbolt M, nut K, and lug L. Lug L is cast in the same piece with and uponthe 9o upper edge of lug C, and is retained thereby in the same xedrelative position to the end of the side rail. The rear'end of bolt Mengages in a slot in body J. Body J is adapted to be moved forward orbackward on anges H H. Thus, when the mattress is tooslack, y the nut Kis turned forward against the lug L, whereby the bolt M is drawn towardthe lug L, carrying with it the end rail, thus increasing the tension ofthe mattress. 1f deroc sirous to lessen the tension of the mattress, thenut K is turned in the inverse direction.

N represents the ordinary spiral-wire mattress, the respective ends ofwhich are secured to the end rails in the ordinary manner.

Having thus described our invention, we do not claim an adjustablecorner-iron or an adjusting-screw for mattress-frames broadly, as we areaware that adjustable corner-irons provided with adjusting-screws areshown in Patents No. 171,042 and No. 224,028.

What we do claim as new, and desire to secure by Letters Patent, is-

1. The im provementin corner-irons for wovenwire-mattress frames hereindescribed, oonsisting in body` J, provided with V-shaped lugs E, adaptedto engage upon the edge and npper surface of the end rails, and .lug C,having lianges D D, said lugs being adapted to engage in slots in therespective ends of the side rails, whereby the end and side rails arerigidly retained in their proper relative position to each other,substantially as and for the purpose set forth.

2. Theimproved corner-iron herein described, z 5 consisting iu body J,provided with lug E and recess I, in combination with bolt M, and lug U,provided with flange D, lug L, and flanges H H, lug J being adapted tobe moved and adjusted all substantially as and for the pur- 3o pose setforth.

3. The combination of side rails, A, provided With slots B, thecorner-iron consisting in body J, provided with lugs E and C and endrails,

F, and the corner-iron J, provided with lug E 3 5 and recess 1,1ug (j,provided with lange D, lug L, and langes H H, lug J being adapted to beadjusted substantially as set forth.

In testimony whereof we affix our signature in presence of twowitnesses.

GEORGE P. SHERMAN. ALBERT BONDELI.

Witnesses:

J AMEs B. ERWIN, W. J. SINNo'rT.

